@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
  /* Cyber-Cloud Palette */
  --bg-color: #000000;
  --bg-charcoal: #050505;
  --accent-cyan: #00F0FF;
  --accent-cyan-glow: rgba(0, 240, 255, 0.3);
  --accent-cyan-subtle: rgba(0, 240, 255, 0.1);
  --accent-midnight: #0A192F;
  --text-main: #ffffff;
  --text-muted: #8892b0;
  --text-cyan: #00F0FF;
  
  /* Glassmorphism */
  --panel-bg: rgba(10, 25, 47, 0.4);
  --border-color: rgba(0, 240, 255, 0.2);
  --border-cyan: #00F0FF;
  --glow-cyan: rgba(0, 240, 255, 0.2);
  --glow-cyan-intense: rgba(0, 240, 255, 0.4);
  
  /* Utilities */
  --input-bg: rgba(0, 0, 0, 0.5);
  --card-subtext: rgba(136, 146, 176, 0.6);
  --history-item-bg: rgba(10, 25, 47, 0.3);
  --toast-bg: rgba(0, 0, 0, 0.95);
  --panel-header-bg: rgba(10, 25, 47, 0.6);
  --code-text-color: #00F0FF;
  --code-bg: #000000;
  --card-shadow: rgba(0, 0, 0, 0.8);
}

/* Light theme disabled for Cyber-Cloud aesthetic - keeping dark only */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: 'Inter', sans-serif;
  overflow-x: hidden;
  overflow-y: auto;
  min-height: 100vh;
  position: relative;
}

/* Aurora Glows - Three Massive Blurred Elements (Barely Visible) */
body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: 
    /* Cyan glow - top right */
    radial-gradient(circle at 90% 10%, rgba(6, 182, 212, 0.04) 0%, transparent 60%),
    /* Indigo glow - center left */
    radial-gradient(circle at 10% 50%, rgba(67, 56, 202, 0.03) 0%, transparent 60%),
    /* Teal glow - bottom right */
    radial-gradient(circle at 90% 90%, rgba(20, 184, 166, 0.03) 0%, transparent 60%);
  z-index: -10;
  pointer-events: none;
  filter: blur(120px);
  overflow: hidden;
}

/* Fading Grid Pattern + Noise Texture */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: 
    /* Fading grid - most visible at bottom */
    linear-gradient(rgba(0, 240, 255, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.1) 1px, transparent 1px),
    /* Noise/grain texture */
    url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.05'/%3E%3C/svg%3E");
  background-size: 50px 50px, 50px 50px, 200px 200px;
  background-position: 0 0, 0 0, 0 0;
  background-repeat: repeat;
  z-index: -10;
  pointer-events: none;
  /* Fade grid from bottom (visible) to top (invisible) */
  mask-image: linear-gradient(to top, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0.8) 30%, rgba(0, 0, 0, 0.4) 60%, rgba(0, 0, 0, 0) 100%);
  -webkit-mask-image: linear-gradient(to top, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0.8) 30%, rgba(0, 0, 0, 0.4) 60%, rgba(0, 0, 0, 0) 100%);
}

.main-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  padding: 8rem 2rem 4rem;
  z-index: 10;
  position: relative;
}

/* Mobile Responsive Styles */
@media (max-width: 768px) {
  .main-nav {
    padding: 10px 16px !important;
    gap: 12px !important;
    top: 0.75rem !important;
  }

  .nav-logo {
    font-size: 1.2rem !important;
    gap: 8px !important;
  }

  .nav-link {
    font-size: 0.9rem !important;
    gap: 6px !important;
  }

  .main-container {
    padding: 6rem 1rem 3rem;
  }

  .hero h1 {
    font-size: clamp(2rem, 8vw, 3.5rem);
  }

  .hero p {
    font-size: 1rem;
    letter-spacing: 0.1em;
  }

  .beta-text-full {
    font-size: 0.85rem !important;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 4rem;
  }

  .feature-card {
    padding: 1.5rem;
  }

  .upload-card {
    width: 100%;
    max-width: 100%;
    padding: 2rem 1.5rem;
  }

  .drop-zone {
    padding: 2rem 1.5rem;
  }

  .upload-icon-container {
    width: 48px;
    height: 48px;
  }

  .upload-text h3 {
    font-size: 1rem;
  }

  .footer {
    padding: 3rem 0 1.5rem;
  }

  .footer > div {
    flex-wrap: wrap;
    gap: 12px !important;
  }
}

@media (max-width: 480px) {
  .main-nav {
    padding: 8px 12px !important;
    gap: 8px !important;
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav-logo {
    font-size: 1rem !important;
    gap: 6px !important;
  }

  .nav-link {
    font-size: 0.85rem !important;
    gap: 4px !important;
  }

  .main-container {
    padding: 5rem 0.75rem 2rem;
  }

  .hero h1 {
    font-size: clamp(1.75rem, 10vw, 2.5rem);
    margin-bottom: 1rem;
  }

  .hero p {
    font-size: 0.9rem;
    letter-spacing: 0.05em;
  }

  .beta-text-full {
    display: none !important;
  }

  .beta-text-short {
    display: inline !important;
    font-size: 0.75rem !important;
  }

  .features-grid {
    gap: 1rem;
    margin-top: 3rem;
  }

  .feature-card {
    padding: 1.25rem;
  }

  .upload-card {
    padding: 1.5rem 1rem;
  }

  .drop-zone {
    padding: 1.5rem 1rem;
  }

  .footer > div {
    flex-direction: column;
    gap: 8px !important;
  }
}

.hero {
  text-align: center;
  max-width: 800px;
  margin-bottom: 2.5rem;
}

.hero h1 {
  font-size: clamp(3rem, 10vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 1;
  margin-bottom: 1.5rem;
  color: #FFFFFF;
}

.hero h1 .cyber-glow {
  background: linear-gradient(to right, #ffffff, #00F0FF);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
  position: relative;
}

.hero p {
  color: var(--text-muted);
  font-size: 1.25rem;
  line-height: 1.6;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.2em;
  font-weight: 500;
}

/* Pulsing animation for logo icon */
@keyframes pulse-logo {
  0%, 100% {
    opacity: 1;
    filter: drop-shadow(0 0 8px #00F0FF);
  }
  50% {
    opacity: 0.8;
    filter: drop-shadow(0 0 16px #00F0FF) drop-shadow(0 0 24px rgba(0, 240, 255, 0.5));
  }
}

.logo-pulse {
  animation: pulse-logo 2s ease-in-out infinite;
}

/* Arrow animation for Get Started link */
@keyframes arrow-slide {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(4px);
  }
}

.get-started-arrow {
  display: inline-block;
  transition: transform 0.3s ease;
}

.get-started-link:hover .get-started-arrow {
  animation: arrow-slide 0.3s ease forwards;
}

.upload-card {
  width: 100%;
  max-width: 500px;
  background: var(--panel-bg);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 2rem;
  box-shadow: 
    0 0 10px rgba(0, 240, 255, 0.2),
    0 25px 50px -12px var(--card-shadow);
  transition: all 0.3s ease;
  position: relative;
}

@media (max-width: 768px) {
  .upload-card {
    max-width: 100%;
  }
}

.upload-card:hover {
  border-color: var(--border-cyan);
  box-shadow: 
    0 0 15px rgba(0, 240, 255, 0.3),
    0 25px 50px -12px var(--card-shadow);
}

.drop-zone {
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: 0 0 8px rgba(0, 240, 255, 0.15);
}

.drop-zone:hover,
.drop-zone.active {
  border: 1px solid #00F0FF;
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.25);
}

/* Scanline Animation */
.drop-zone::before {
  content: '';
  position: absolute;
  top: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
  animation: scanline 3s linear infinite;
  opacity: 0.6;
}

@keyframes scanline {
  0% {
    top: -2px;
    opacity: 0.6;
  }
  50% {
    opacity: 1;
  }
  100% {
    top: 100%;
    opacity: 0.6;
  }
}

.drop-zone:hover,
.drop-zone.active {
  border-color: var(--border-cyan);
  background: var(--accent-cyan-subtle);
  box-shadow: 
    inset 0 0 20px var(--glow-cyan),
    0 0 20px var(--glow-cyan);
}

.drop-zone:hover::before,
.drop-zone.active::before {
  opacity: 1;
  animation-duration: 1.5s;
}

.upload-icon-container {
  width: 64px;
  height: 64px;
  background: var(--accent-cyan-subtle);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  color: var(--accent-cyan);
  box-shadow: 0 0 15px var(--glow-cyan);
  transition: all 0.3s ease;
}

.drop-zone:hover .upload-icon-container {
  border-color: var(--border-cyan);
  box-shadow: 0 0 25px var(--glow-cyan-intense);
  transform: scale(1.05);
}

.upload-text h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.file-input {
  display: none;
}

.progress-container {
  margin-top: 1.5rem;
  width: 100%;
}

.progress-bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 100px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-cyan));
  box-shadow: 0 0 10px var(--accent-cyan), 0 0 20px var(--accent-cyan);
  animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 10px var(--accent-cyan), 0 0 20px var(--accent-cyan);
  }
  50% {
    box-shadow: 0 0 20px var(--accent-cyan), 0 0 30px var(--accent-cyan), 0 0 40px var(--accent-cyan);
  }
}

.result-area {
  margin-top: 2rem;
}

.link-box {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.link-text {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.copy-btn {
  background: var(--bg-color);
  color: var(--accent-cyan);
  border: 1px solid var(--border-cyan);
  border-radius: 10px;
  padding: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: 0 0 10px var(--glow-cyan);
}

.copy-btn:hover {
  transform: translateY(-2px);
  background: var(--accent-cyan-subtle);
  box-shadow: 0 0 20px var(--glow-cyan-intense), 0 4px 12px var(--glow-cyan);
  color: var(--accent-cyan);
}

.features-grid {
  margin-top: 6rem;
  width: 100%;
  max-width: 1000px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 2rem;
  transition: all 0.3s ease;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.feature-card:hover {
  border-color: var(--border-cyan);
  background: var(--accent-cyan-subtle);
  box-shadow: 0 0 30px var(--glow-cyan-intense);
  transform: translateY(-4px);
}

.footer {
  margin-top: auto;
  padding: 4rem 0 2rem;
  color: var(--footer-text);
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.footer a {
  color: #666;
  text-decoration: none;
}

/* Cyber Button Style */
.cyber-btn {
  background: var(--bg-color);
  color: var(--accent-cyan);
  border: 1px solid var(--border-cyan);
  border-radius: 8px;
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  box-shadow: 0 0 10px var(--glow-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.875rem;
}

.cyber-btn:hover {
  background: var(--accent-cyan-subtle);
  box-shadow: 0 0 20px var(--glow-cyan-intense);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* Pulse Animation for Beta Badge */
@keyframes pulse-cyan {
  0%, 100% {
    box-shadow: 0 0 10px var(--accent-cyan), 0 0 20px var(--accent-cyan);
    opacity: 1;
  }
  50% {
    box-shadow: 0 0 20px var(--accent-cyan), 0 0 30px var(--accent-cyan), 0 0 40px var(--accent-cyan);
    opacity: 0.9;
  }
}

.cyber-pulse {
  animation: pulse-cyan 2s ease-in-out infinite;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-cyan-subtle);
  border-color: var(--border-cyan);
  box-shadow: 0 0 10px var(--glow-cyan);
}